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[PULL 51/53] iotests: Add test for the regression fixed in c8bf9a9169
From: |
Max Reitz |
Subject: |
[PULL 51/53] iotests: Add test for the regression fixed in c8bf9a9169 |
Date: |
Tue, 26 Jan 2021 15:20:14 +0100 |
From: Alberto Garcia <berto@igalia.com>
Signed-off-by: Alberto Garcia <berto@igalia.com>
Suggested-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210112170540.2912-1-berto@igalia.com>
[mreitz: Add "# group:" line]
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
tests/qemu-iotests/313 | 104 +++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/313.out | 29 +++++++++++
tests/qemu-iotests/group | 1 +
3 files changed, 134 insertions(+)
create mode 100755 tests/qemu-iotests/313
create mode 100644 tests/qemu-iotests/313.out
diff --git a/tests/qemu-iotests/313 b/tests/qemu-iotests/313
new file mode 100755
index 0000000000..a75655b7ef
--- /dev/null
+++ b/tests/qemu-iotests/313
@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+# group: rw auto quick
+#
+# Test for the regression fixed in commit c8bf9a9169
+#
+# Copyright (C) 2020 Igalia, S.L.
+# Author: Alberto Garcia <berto@igalia.com>
+# Based on a test case by Maxim Levitsky <mlevitsk@redhat.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=berto@igalia.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+status=1 # failure is the default!
+
+_cleanup()
+{
+ _cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt qcow2
+_supported_proto file
+_supported_os Linux
+_unsupported_imgopts cluster_size refcount_bits extended_l2 compat=0.10
data_file
+
+# The cluster size must be at least the granularity of the mirror job (4KB)
+# Note that larger cluster sizes will produce very large images (several GBs)
+cluster_size=4096
+refcount_bits=64 # Make it equal to the L2 entry size for convenience
+options="cluster_size=${cluster_size},refcount_bits=${refcount_bits}"
+
+# Number of refcount entries per refcount blocks
+ref_entries=$(( ${cluster_size} * 8 / ${refcount_bits} ))
+
+# Number of data clusters needed to fill a refcount block
+# Equals ${ref_entries} minus two (one L2 table and one refcount block)
+data_clusters_per_refblock=$(( ${ref_entries} - 2 ))
+
+# Number of entries in the refcount cache
+ref_blocks=4
+
+# Write enough data clusters to fill the refcount cache and allocate
+# one more refcount block.
+# Subtract 3 clusters from the total: qcow2 header, refcount table, L1 table
+total_data_clusters=$(( ${data_clusters_per_refblock} * ${ref_blocks} + 1 - 3
))
+
+# Total size to write in bytes
+total_size=$(( ${total_data_clusters} * ${cluster_size} ))
+
+echo
+echo '### Create the image'
+echo
+TEST_IMG_FILE=$TEST_IMG.base _make_test_img -o $options $total_size |
_filter_img_create_size
+
+echo
+echo '### Write data to allocate more refcount blocks than the cache can hold'
+echo
+$QEMU_IO -c "write -P 1 0 $total_size" $TEST_IMG.base | _filter_qemu_io
+
+echo
+echo '### Create an overlay'
+echo
+_make_test_img -F $IMGFMT -b $TEST_IMG.base -o $options |
_filter_img_create_size
+
+echo
+echo '### Fill the overlay with zeroes'
+echo
+$QEMU_IO -c "write -z 0 $total_size" $TEST_IMG | _filter_qemu_io
+
+echo
+echo '### Commit changes to the base image'
+echo
+$QEMU_IMG commit $TEST_IMG
+
+echo
+echo '### Check the base image'
+echo
+$QEMU_IMG check $TEST_IMG.base
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/313.out b/tests/qemu-iotests/313.out
new file mode 100644
index 0000000000..adb9f7bd95
--- /dev/null
+++ b/tests/qemu-iotests/313.out
@@ -0,0 +1,29 @@
+QA output created by 313
+
+### Create the image
+
+Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=SIZE
+
+### Write data to allocate more refcount blocks than the cache can hold
+
+wrote 8347648/8347648 bytes at offset 0
+7.961 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+### Create an overlay
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=SIZE
backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
+
+### Fill the overlay with zeroes
+
+wrote 8347648/8347648 bytes at offset 0
+7.961 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+### Commit changes to the base image
+
+Image committed.
+
+### Check the base image
+
+No errors were found on the image.
+Image end offset: 8396800
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index d4a3e36a9a..a0d0bf1688 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -320,3 +320,4 @@
309 rw auto quick
310 rw quick
312 rw quick
+313 rw auto quick
--
2.29.2
- [PULL 42/53] block/backup: drop extra gotos from backup_run(), (continued)
- [PULL 42/53] block/backup: drop extra gotos from backup_run(), Max Reitz, 2021/01/26
- [PULL 43/53] backup: move to block-copy, Max Reitz, 2021/01/26
- [PULL 44/53] qapi: backup: disable copy_range by default, Max Reitz, 2021/01/26
- [PULL 48/53] simplebench: bench_block_job: add cmd_options argument, Max Reitz, 2021/01/26
- [PULL 45/53] block/block-copy: drop unused block_copy_set_progress_callback(), Max Reitz, 2021/01/26
- [PULL 49/53] simplebench: add bench-backup.py, Max Reitz, 2021/01/26
- [PULL 47/53] simplebench/bench_block_job: use correct shebang line with python3, Max Reitz, 2021/01/26
- [PULL 46/53] block/block-copy: drop unused argument of block_copy(), Max Reitz, 2021/01/26
- [PULL 50/53] block: report errno when flock fcntl fails, Max Reitz, 2021/01/26
- [PULL 52/53] iotests/118: Drop 'change' test, Max Reitz, 2021/01/26
- [PULL 51/53] iotests: Add test for the regression fixed in c8bf9a9169,
Max Reitz <=
- [PULL 53/53] iotests/178: Pass value to invalid option, Max Reitz, 2021/01/26
- Re: [PULL 00/53] Block patches, Peter Maydell, 2021/01/27